Bushing.



D. GQ LANGLANDS.

BUSHING.

Arrmouon FILED nn.2o,1so7.

be2 Dec. 22, 1908.

DANIEL G. LANGLANDS, OF BOSTON, MASSACHUSETTS.

RUSHING.

specification of Letters Patent., f

i Patented Dee. e2, 1908.

' Application filed March 20, 19Q7. Serial No. 363,512..

To all 'whom it may concern:

Be it known that'L'DANIEL G. LANG- LANDs, of "Boston, in the county of Suffolk 'and State of Massachusetts, acitizen of the UnitedStates, have invented a new anduseful Improvement in Bushings, of which the following is a specification.

My invention relates to an improvement in bushings especially adapted Afor sectional pulleys and is more especially adapted to loose ulleys Where it is necessary that there shall be a thorough lubrication of the shaft which asses through the bushing and where alsoit 1s desirable that not only shall the means of lubrication be such that the lubricator need viz: that of providing'a very large inter1or bearing surface; of being made corn aratively light; will have no parts toV s ake loose causing loss of oil, wear and shortening the life of the bushing, and Will also ,be selfacting not only to keep the oil within the bushing but to cause a distribution or circulation of the oil throughout the bushing.

My invention will be,understoodby reference to the drawings, in Which- Figure 1 is an elevation of a bushing embodying my invention; Fig. 2 being a vertical section on line 22 of Fig. 3, showing also the shaft within the bushing, and Fig. 3 1s a cross section on line 3-3 of Fig. 1.

As may be seen from the drawings, the bushing comprises in a one-piece structure a main bearing section A and at the end thereof a section-A1L forming an oil chamber B.

C is the shaft on which the bushing is arranged. sists simply of a sleeve fitting snugly around the shaft O and providing a large interior bearing surface. l'The exterior of this ortion of the bushing may be of any desired shape to receive a pulley or other part. applied to it.

In Fig. 2 there is shown in dotted lines a conventionalized portion of a pulley mounted upon the bushing.

The section A1 of the bushing is made hollow to form the oil chamber B around the The section A of the bushing conshaft C. The outer lside or face A2 yo fl'this section forming the end of the bushing 1s made to present an auxiliary bearmgfor the ishaft O, and it is to be noted that by reason of the integral connection of this art A2 with the main bodyof the bushing t e part may easily beformed to resent a true auxiliary bearin for the sha t.

The oil We l Bis provided With an opening in the section A1 for admitting the oil. This opening is closed by a screw b. Under ord1- nary conditions the level of the oil 1n the oil chamber should be sufficiently low so as not to come in Contact with the surface of the shaft C. y

For the purpose of bringing the oil in contact with the'shaft C a ringI) may be used. This ring rides on the shaft as the shaft rotates, belng carried around by it more or less,

`and as the ring turns it carries up oil onto the shaft which oil spreads along the shaft through the bushing. I prefer, iowever, for the pur ose of oiling the bushing f rom'the oil well to provide the interior of the main bearing section orsleeve A with a longitudinally. extending groove a in Which is a piece of felta,1 the end of which preferablydips into the oil in the oil well so as to keep thev strip saturated by capillary attraction.

At the end of the main bearing section of the bushing beyond the longitudinally-extending groove a containing the felt oit-fibrous material by which the oil is applied to the shaft I provide a groove a? having anedge or edges extendingvin an oblique direction to the axis of the shaft as I have found that a groove with an edge so extending not only acts to prevent the oil creeping outl wardly along the shaft and escaping from the bushing, but by reason of theob'Iique linclination of the edge or edges of this groove the oil is forced back along the shaft in'the direction of the oil chamber. vI prefertoso make the groove that its edge or edgeswill extend in a zigzag direction when the same effect is obtained as above noted whatever the direction in which the bushing or shaft may be turned. At the other end of the bushing within the chamber of the oil-carrying section there are )rovided upon the interior of the outer wal of this section Wipers b1. rThese wipers are preferably integrally formed as a part of the bushing and extend inwardly from the wall bearing the same 'in the direction of the axis of the shaft, cooperating therewith to scrape or wipe the eil di shaftmay be guided, as it were, back along the shaft towards the interior ofthe bushing and as it accumulates on the. shaftdrop into What I claim as my invention 1. Av bushing of, thefharacterj specified having a main bearing :and an oilcarrying section throughgbothlof'which sections a shaft may extendjsa-.id Amain bearing section having formed. therein means whereby oilapplied to said shaft may be kept from escaping from said bushing and directed along said shaft towards the oil-carrying sec-- tion thereof, means whereby oil in the well of said oil-carry' g section of said bushing may be applied to said shaft, and means adapted to wlpe theoil from said shaft and restore it to the well of said oil-car ing section.

2. A bushing of the (lz-fiaracter specified having a main bearing section and an oilcarrying section through both of which sections a shaft may extend, said main bearing section having formed therein means whereby oil applied to said shaft may be kept from escaping from said bushing and directed along said shaft towards the oil-carryingl section thereof, means whereby oil in the well of said oil-carrying section of said bushing may be applied to said shaft, and wipers located upon'the interior wall of said oil-carrying section and extending inwardly therefrom in the direction of the axis of the shaft and coperating therewith'to wipe the oil therefrom and return-it to'said oil well.`

3. A bushing of thecharacter specified having a main bearing section and 'an oilcarry' g section' through both of which sections a'shaft may extend, means whereby oil in the well of the oil chamber may be conveyed 'to the shaft, and wipers located upon the interior wall of said oil-carrying section and extending inwardly therefrom in the direction of the axis of the shaft and -coperating therewith to wilpe the oil therefrom and return it to said oi well.

its

' sai 4. A bushing of the character specified having a main bearing section and an oilcarrying section through both of which sections a shaft may extend, said main bearing section being provided with a groove in the interior thereof having an edge obli inclined with respect tojthe axis of said shaft, means whereby oil in the well of said oil-carrying section may be a plied to the shaft, and means located witthin 1 said oilcarrying section adapted to wipe the oil from said shaft and restore it to said oil-well.

5. A bushing comprising a bearing section and an oil-carrying section, said oil-carrying section being located at one end of said bearing section, said` bearing section having. a longitudinal groove extending approximately in sai groove, agportion of said material projecting into said` oil well, said bearing th, a strip of brous material located quely section also having a groove provided with an edge extending atan obli ue angle with respect to the axis of a shaftclocated within said bushing and between one end of said longitudinal roove and the outer endvof bushing or directing the oil, a plied to said shaft by said fibrous material, a on said shaft towards the oil-carrying section t ereof, and wipers located on the outer wall of said oil-carrying section for wiping the oil frolrln saidshaft and returning it lto said oil we v 6. A bushing comprising a bearing section having an oil well locatedat one end thereof, means for preventing the escape,of oil from said oil wel around a shaft running in said bushing, means for lubricating said shaft comprising a strip of fibrous materiallocated within said bearing, one endoflfsaid s trip lying in, said oil reservoir, and means located between the further end of said strip -of fibrous material and the end of said bearing whereby oil carried by said shaft-.will be prevented from escaping from said bearing, as described.

DANIEL G. LANGLANDS.

Witnesses:

GEORGE O. G. CoALE, ROBERT S..L1TTLEF1ELD. 

